UHMW tip fill is treated for bonding on both sides and is white. The 1.6mm thick tip fill is 13 inches wide. The 1.6mm is great for lighter and more flexible ski and board designs, where traditional 2.1mm thick might be too stiff. Use tip fill as an extension of the core (where your sidewalls end), at the tip and tail of your skis or snowboard. Tip and tail fill is also sometimes referred to as tip and tail spacer or insert material. This tip fill is sold as a 33ft (10m) roll.